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    How do you check compression?

    I have a 1984 Johnson 140hp engine and I want to check the compression on all 4 cylinders but do not know how. Is it something easy? Was told that one of my cylinders had 135psi on #1, 125psi on #2, 40psi on #3 & 135psi on #4. The boat runs great. Plugs look okay after heavy use. What are the...
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    Spark Plug Gap Setting

    1984 Johnson 140hp V4. I need to know the gap setting or should I use the bullseye marine plug? Which Is Better?
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    What Is This and should it be leaking fuel?

    I have a 1979 Johnson 140HP VRO engine and when I choke the ignition switvh during starting, it leaks gasoline out of the top area below the red lever.
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    Will Not Stay Running

    I have a 1979 Johnson 140 V4 engine that is hard to start and when started, will not stay running. Can prime the ball until tight. Will run for a few seconds and then shut off. Note: this motor has not ran sine 1997. It mixes oil automatically but was told to mix oil and gas until I know for...
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